Tubing String Weight Calculator

Calculate the total weight of a tubing string in air, in wellbore fluid, and buoyed weight. Essential for packer setting, tension/compression analysis, and rig design.

String Configuration

Tubing OD (inches)

Tubing ID (inches)

Tubing Unit Weight (lb/ft)

2⅞" 6.5# is standard J55

String Length / Depth (ft)

Wellbore Fluid Density (ppg)

Tubing Fill Fluid Density (ppg)

Results

Weight in Air

Buoyed Weight

Buoyancy Factor

Weight in Tons

short tons

Unit weight (lb/ft)

Steel cross-section area (in²)

Equations

Buoyancy Factor: BF = 1 - (fluid_density / steel_density); steel ≈ 65.5 ppg

Buoyed weight: W_buoy = W_air × BF

Alternative formula: BF = (65.5 - fluid_ppg) / 65.5

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